diff --git a/debian/resources/postgres.sh b/debian/resources/postgres.sh
index c27f091..2d02411 100755
--- a/debian/resources/postgres.sh
+++ b/debian/resources/postgres.sh
@@ -55,7 +55,7 @@ systemctl restart postgresql
 #enable and run the backup
 cp backup/fusionpbx-backup.sh /etc/cron.daily
 chmod 755 /etc/cron.daily/fusionpbx-backup.sh
-sed -i 's/zzz/$password/g' /etc/cron.daily/fusionpbx-backup.sh
+sed -i "s/zzz/$password/g" /etc/cron.daily/fusionpbx-backup.sh
 /etc/cron.daily/fusionpbx-backup.sh
 
 #move to /tmp to prevent a red herring error when running sudo with psql